TABLE 1.
Most common colonizing bacteria isolated from gram-negative bacilli active surveillance cultures, 1 June 2009–31 May, 2012
| Organism | Overall (% of total) |
LRMC (% of total) |
NNMCa (% of total) |
WRAMCb (% of total) |
BAMC (% of total) |
WRNMMCc (% of total) |
|---|---|---|---|---|---|---|
| Escherichia coli | 1039 (50.3) | 606 (51.3) | 144 (49.7) | 147 (52.1) | 128 (49.8) | 14 (25.9) |
| Klebsiella pneumoniae | 179 (8.7) | 88 (7.4) | 26 (9.0) | 30 (10.6) | 30 (11.7) | 5 (9.3) |
| Enterobacter aerogenes | 153 (7.4) | 96 (8.1) | 18 (6.2) | 18 (6.4) | 17 (6.6) | 4 (7.4) |
| Acinetobacter calcoaceticus baumannii | 143 (6.9) | 84 (7.1) | 23 (7.9) | 20 (7.1) | 16 (6.2) | 0 (0.0) |
| Pseudomonas aeruginosa | 130 (6.3) | 45 (3.8) | 37 (12.8) | 19 (6.7) | 18 (7.0) | 11 (20.4) |
| Enterobacter cloacae | 116 (5.6) | 80 (6.8) | 10 (3.4) | 9 (3.2) | 13 (5.1) | 4 (7.4) |
| Citrobacter spp. | 83 (4.0) | 57 (4.8) | 6 (2.1) | 9 (3.2) | 8 (3.1) | 3 (5.6) |
| Pseudomonas spp. (non-aeruginosa) | 47 (2.3) | 33 (2.8) | 2 (0.7) | 6 (2.1) | 4 (1.6) | 2 (3.7) |
| Proteus mirabilis | 41 (2.0) | 20 (1.7) | 5 (1.7) | 6 (2.1) | 7 (2.7) | 3 (5.6) |
| Serratia marcescens | 35 (1.7) | 15 (1.3) | 7 (2.4) | 8 (2.8) | 3 (1.2) | 2 (3.7) |
| Totald | 2065 | 1182 | 290 | 282 | 257 | 54 |
LRMC=Landstuhl Regional Medical Center; NNMC=National Naval Medical Center; BAMC=Brooke Army Medical Center; WRAMC=Walter Reed Army Medical Center; WRNMMC=Walter Reed National Military Medical Center
NNMC was combined with WRAMC to form WRNMMC in September 2011; therefore, NNMC is limited to data from June 2009 through August 2011
WRAMC was combined with NNMC to form WRNMMC in September 2011; therefore, WRAMC is limited to data from June 2009 through August 2011
WRNMMC was established September 2011; therefore, WRNMMC is limited to data from September 2011 through May 2012
Total for each column includes bacterial isolates not incorporated as part of the top ten overall colonizing bacteria, therefore, the sum of the isolates listed for each column equals less than the total